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Fair Value Measurements (Tables)
12 Months Ended
Dec. 31, 2019
Fair Value Disclosures [Abstract]  
Schedule of assets and liabilities measured at fair value on a recurring basis
Assets and liabilities measured at fair value on a recurring basis consisted of the following at December 31:
 
 
 
 
Fair Value
(In millions)
Classification
Fair Value Hierarchy
 
2019
 
2018
Assets
 
 
 
 
 
 
   Cash flow hedges
Prepaid expenses and other current assets
Level 2
 
$
4

 
$

Liabilities
 
 
 
 
 
 
   Contingent consideration
Other long-term liabilities
Level 3
 
$
1

 
$
12